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Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 37,231	$ 88,855	$ 128,237	$ 269,664
Other comprehensive (loss) income:
Foreign currency translation	(13,451)	(2,605)	(34,083)	1,423
Change in unrealized gains (losses) on marketable securities, net of tax	(431)	(1,029)	(5,154)	(1,025)
Total other comprehensive (loss) income	(13,882)	(3,634)	(39,237)	398
Comprehensive income	$ 23,349	$ 85,221	$ 89,000	$ 270,062

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